One vertex per element, one color per generator, with an edge from x to x·s.
(9,10)(11,13)(12,16)(14,15)(17,18,23,25)(19,24,22,21)(20,26,30,32)(27,28,29,31)(1,2)(3,6)(4,5)(7,8)(10,15)(11,16)(17,19,23,22)(18,24,25,21)(20,27,30,29)(26,28,32,31)(2,5)(6,8)(9,11,14,16)(10,12,15,13)(18,25)(19,22)(26,32)(27,29)(3,7)(6,8)(9,12,14,13)(10,11,15,16)(17,20)(18,26)(19,27)(21,31)(22,29)(23,30)(24,28)(25,32)(1,3,4,7)(2,6,5,8)(9,10)(11,12)(13,16)(14,15)(17,21,23,24)(18,19,25,22)(20,28,30,31)(26,29,32,27)(1,2)(3,6)(4,5)(7,8)(9,13,14,12)(10,16,15,11)(17,22,23,19)(18,24,25,21)(20,29,30,27)(26,28,32,31)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.